FfarquharDeveloper's TrackMaster Customs

Some interesting prints there, kudos for designing some new 3D models it can be harder than some people think and does have an element of experimentation to get the right look or features that print correctly.

I can see what you mean about the print issues, something we all face now and again. Have you tried a different filament and settings with your prints? Also which slicer are you using? Layer height can be an issue as can using some of the more recent 'experimental' settings in the latest versions of Cura if you use that. In there you can find a setting called 'adaptive layers' (or something similar) which varies the layer height depending upon the part of the model being printed. This can help with curves and smaller details on some designs, but its very much a case of try and see what you get. Out of interest which printer did you go for in the end?